Updating Jetty

hpi:run mojo is a variant of jetty:run mojo, and because of the way plugin descriptor is generated, this module copies some code from Jetty Maven plugin, specifically AbstractJettyMojo.java and ConsoleScanner.java.

To keep upstream tracking easier, prestine copies of these files are copied into incoming-x.y branch, then package renamed. This version specific incoming branch is then "theirs" merged into the incoming branch, which acts as the upstream tracking branch.

This branch is then merged into master via git merge -X ignore-space-at-eol incoming. See diff between incoming and master on these files to see the exact local patches.